CN103028170B - A kind of respiratory pressure fuzzy control type respirator and respiratory pressure fuzzy control method - Google Patents
A kind of respiratory pressure fuzzy control type respirator and respiratory pressure fuzzy control method Download PDFInfo
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
- A61M16/024—Control means therefor including calculation means, e.g. using a processor
- A61M16/026—Control means therefor including calculation means, e.g. using a processor specially adapted for predicting, e.g. for determining an information representative of a flow limitation during a ventilation cycle by using a root square technique or a regression analysis
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
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- A—HUMAN NECESSITIES
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
- A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
- A61M2016/0039—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the inspiratory circuit
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- A—HUMAN NECESSITIES
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
- A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
- A61M2016/0042—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the expiratory circuit
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
- A61M2016/102—Measuring a parameter of the content of the delivered gas
- A61M2016/1025—Measuring a parameter of the content of the delivered gas the O2 concentration
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/50—General characteristics of the apparatus with microprocessors or computers
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Abstract
The present invention relates to respirator, disclose a kind of respiratory pressure fuzzy control type respirator and respiratory pressure fuzzy control method.The present invention controls the action of each parts by exporting actual controlled quentity controlled variable by fuzzy controller in calligraphy or painting model embodiment, and signal variable transmission in each sensor collection each position carries out fuzzy control operation to fuzzy controller, wherein air-breathing electromagnetic proportional valve can control valve opening aperture consecutive variations within the specific limits by corresponding control signal (voltage or current signal), fuzzy controller can be by controlling the aperture of each valve, control to enter the flow consecutive variations within the specific limits of rear class gas circuit, and then control airway pressure.Make patient use this respirator, breathe more comfortable, safer.
Description
Technical field
The present invention relates to respirator, particularly relate to a kind of respiratory pressure fuzzy control type respirator and respiratory pressure fuzzy control method.
Background technology
Respiratory muscle refers to the muscle relevant with respiratory movement.Including intercostales externi and diaphram, sternocleidomastoid, back muscle group, chest muscle group etc..
Respirator is that a kind of normal physiological that can replace, control or change people is breathed, and increases pulmonary ventilation volume, improves respiratory function, alleviate work of breathing consumption, saves the device of heart reservation ability.
Existing respirator is generally configured with four basic functions, i.e. to lung inflation, air-breathing to conversion of exhaling, discharges alveolar gas and expiration is changed to air-breathing, move in circles successively.Including: (1) it is provided that the power of conveying gas, replaces the work of human body respiration flesh；(2) can produce certain respiratory rhythm, including respiratory frequency and inspiratory/expiratory, to replace the function of human body respiration nervus centralis domination respiratory rhythm；(3) it is provided that suitable tidal volume (VT) or minute ventilation (MV), to meet the needs of respiratory metabolism；(4) the gas supplied, preferably through adding gentle humidifying, replaces human body nasal cavity function, and can supply higher than O2 amount contained in air, suck O2 concentration to improve, improve oxygenate.Power source: available compressed gas is used as power (pneumatic) or motor also may utilize the types such as pneumatic gas-control, electric electric-controlled, Pneumatic electrical control as power (electronic) respiratory frequency and inspiratory/expiratory, exhale and the switching of air-breathing phase, switch to expiration (volum-controlled type) after reaching predetermined volumes when switching to expiration (level pressure type) or air-breathing after often reaching predetermined pressure in respiratory cycle when air-breathing, but modern ventilator all has both the above form concurrently.
It is modal control method in industrial processes that PID controls, and has the advantages such as realization is easy, use is flexible.PID controller is made up of proportional unit (P), integral unit (I) and differentiation element (D).Its input e (t) with the relation of output u (t) is:
u(t)=kp(e(t)+1/TI∫e(t)dt+TD*de(t)/dt)；
In formula, the bound of integration is 0 and t respectively, and therefore its transmission function is:
G(s)=U(s)/E(s)=kp(1+1/(TI*s)+TD*s)；
Wherein kp is proportionality coefficient；TI is integration time constant；TD is derivative time constant.Proportional unit can response error situation timely, and provide corresponding correction；Integral unit can eliminate the static difference of system, increases the accuracy controlled；Differentiation element can perceptual signal variation tendency, revise deviation in advance.
The development experience that respirator controls is by open loop to closed loop, by single argument control, single variable's feedback to multivariable Control, the evolution of multivariable feedback.The theoretical basis of traditional respirator control method is classical control theory based on fixing mathematical model, but the factors such as the physiological change due to human body are time-variant nonlinear, the actual time-variant nonlinear model that should be of the mathematical model of respirator, control ineffectivity in some cases when the most traditional volum-controlled type respirator and level pressure type respirator and control method thereof result in actual application.Additionally regulator parameter is relevant with the steady state operating condition residing for respirator system, and therefore adjusting for pid parameter just has suitable workload.When controlled device changes, regulator parameter is needed to make corresponding adjustment.Owing to the parameter of actuator is adjusted according to procedure parameter, so not having " adaptive ability ", setting parameter the most again.But the time needed due to the seriality and parameter tuning that control process so that actual being difficult to of again adjusting performs, and almost cannot complete in actual control.In actual applications, by its simplification can be become substantially linear and dynamic characteristic time invariant system, such PID just can control, but the effect controlled is poor.And the respirator using traditional PI D-algorithm controller produces a sensation rushed sometimes, it is impossible to follow the tracks of the breathing of patient, often result in man-machine confrontation, use comfort poor, time serious, even can cause malpractice.
Summary of the invention
First goal of the invention of the present invention is that providing a kind of breathes more comfortable, safer respiratory pressure fuzzy control type respirator.
A kind of respiratory pressure fuzzy control type respirator, including air-breathing loop, expiration loop, face shield；Described air-breathing loop, expiration loop are simultaneously connected with face shield；Also include the fuzzy controller of each component actuation in controlling air-breathing loop, expiration loop.
According to said structure, one respiratory pressure fuzzy control type respirator of the present invention can obtain input signal variable according to each sensor, by exporting actual output after fuzzy-adaptation PID control fuzzy control, during making the present invention use, more meet the mode of human body respiration, breathe more comfortable, safer.
Optionally, described expiration loop includes expiration electromagnetic proportional valve, expiratory one-way valve；Described expiration electromagnetic proportional valve connects described face shield, and is also associated with first flow sensor, the first pressure transducer between；Described expiratory one-way valve connects expiration electromagnetic proportional valve.
By above structure, one respiratory pressure fuzzy control type respirator of the present invention can obtain expiratory gas flow signal, breath pressure signal, and expiration electromagnetic proportional valve is for controlling flow and the flow velocity exhaled, and expiratory one-way valve is for controlling the flow direction exhaled.
Described air-breathing loop includes sky oxygen mixer, suction control valve, air-breathing electromagnetic proportional valve, humidifier, gas receiver, oxygen input check valve, air input check valve, pressure regulator valve, precise pressure regulating valve, air relief valve；Described air-breathing electromagnetic proportional valve connects described face shield, and is also associated with second flow sensor, oxygen concentration sensor, the second pressure transducer between；Described humidifier is by precise pressure regulating valve series connection air-breathing electromagnetic proportional valve；Described gas receiver connects humidifier；Described empty oxygen mixer connects gas receiver；Described oxygen input check valve is connected by pressure regulator valve with empty oxygen mixer respectively with empty oxygen mixer, air input check valve, and parallel join has pressure balance electromagnetic valve between oxygen input check valve and air input check valve；Described suction control valve one end connects empty oxygen mixer by air relief valve, and the other end connects air-breathing electromagnetic proportional valve.
By above structure, one respiratory pressure fuzzy control type respirator of the present invention can obtain inspiratory flow signal, pressure of inspiration(Pi) signal, oxygen concentration signal；Wherein oxygen input check valve is for controlling the flow direction of oxygen input；Air input check valve is for controlling the flow direction of air input；Empty oxygen mixer is used for oxygen and the air of Mixed design；Pressure balance electromagnetic valve is for controlling the oxygen content of mixed gas；Pressure regulator valve is for reducing oxygen input, the air pressure of air input；Suction control valve is for controlling the flow of gas；Air-breathing electromagnetic proportional valve, for accurately controlling the size of inspiratory flow, improves the control of gas flow and flow velocity, more meets the frequency of human body respiration so that use more comfortable.
Optionally, the hypoxia alarm connecting described oxygen input check valve is also included.Make the present invention input amount of oxygen less than when needing input value can automatic alarm, improve safety.
Optionally, the air horn connecting described air input check valve is also included.Make the present invention input air amount less than when needing input value can automatic alarm, improve safety.
Another goal of the invention of the present invention is to provide a kind of respiratory pressure fuzzy control method.
Fuzzy controller in the respirator worked under original state obtains input signal variable by each sensor, exports actual controlled quentity controlled variable after fuzzy control；Described fuzzy control includes: input signal variable obfuscation: input signal variate-value is converted into machine language；Fuzzy reasoning: according to Fuzzy Logic Reasoning Algorithm, draw the fuzzy control quantity corresponding with input signal variate-value；Fuzzy control quantity ambiguity solution: according to ambiguity solution algorithm, the fuzzy control quantity described in ambiguity solution, draw actual controlled quentity controlled variable.
Optionally, described input signal variable includes: breath pressure signal, expiratory gas flow signal, pressure of inspiration(Pi) signal, inspiratory flow signal, oxygen concentration signal.
According to foregoing, the present invention can provide more comfortable, the safer respiratory pressure fuzzy control type respirator of a kind of breathing and a kind of method of respiratory pressure fuzzy control being capable of respirator.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, is not intended that inappropriate limitation of the present invention, in the accompanying drawings:
A kind of schematic diagram of gas circuit that Fig. 1 provides for the embodiment of the present invention 1.
Detailed description of the invention
Describing the present invention in detail below in conjunction with accompanying drawing and specific embodiment, illustrative examples and explanation in this present invention are used for explaining the present invention, but not as a limitation of the invention.
Embodiment 1:
As it is shown in figure 1, present embodiment discloses a kind of respiratory pressure fuzzy control respirator.
One of which respiratory pressure fuzzy control respirator includes air-breathing loop, expiration loop, face shield 100；Air-breathing loop, expiration loop are simultaneously connected with face shield 100；Also include the fuzzy controller (not shown) of each component actuation in controlling air-breathing loop, expiration loop.Wherein expiration loop includes expiration electromagnetic proportional valve 210, expiratory one-way valve 220；Expiration electromagnetic proportional valve 210 connects face shield 100, and is also associated with first flow sensor the 211, first pressure transducer 212 between；Expiratory one-way valve 220 connects expiration electromagnetic proportional valve 210.Air-breathing loop includes sky oxygen mixer 350, suction control valve 320, air-breathing electromagnetic proportional valve 310, humidifier 330, gas receiver 340, oxygen input check valve 360, air input check valve 370, pressure regulator valve (361,371), precise pressure regulating valve 311, air relief valve 321；Air-breathing electromagnetic proportional valve 310 connects face shield 100, and is also associated with second flow sensor 301, oxygen concentration sensor the 303, second pressure transducer 302 between；Humidifier 330 is connected air-breathing electromagnetic proportional valve 310 by precise pressure regulating valve 311；Gas receiver 340 connects humidifier 330；Empty oxygen mixer 350 connects gas receiver 340；Oxygen input check valve 360 is connected by pressure regulator valve (361,371) with empty oxygen mixer 350 respectively with empty oxygen mixer 350, air input check valve 370, and parallel join has pressure balance electromagnetic valve 380 between oxygen input check valve 360 and air input check valve 370；Suction control valve 320 one end connects sky oxygen mixer 350 by air relief valve 320, and the other end connects air-breathing electromagnetic proportional valve 310；Oxygen input check valve 360 connects hypoxia alarm 362；Air input check valve 370 connects air horn 372.
The present embodiment exports actual controlled quentity controlled variable by fuzzy controller (not shown) and controls the action of each parts, and signal variable transmission in each sensor collection each position carries out fuzzy control operation to fuzzy controller, wherein air-breathing electromagnetic proportional valve can control valve opening aperture consecutive variations within the specific limits by corresponding control signal (voltage or current signal), fuzzy controller can be by controlling the aperture of each valve, control to enter the flow consecutive variations within the specific limits of rear class gas circuit, and then control airway pressure.
In the present invention, the fuzzy control in respiratory pressure fuzzy control method is a kind of control theory based on language rule Yu fuzzy reasoning, is an important branch of Based Intelligent Control.The core of fuzzy control utilizes Fuzzy Set Theory exactly, and the natural language of the control strategy of people is converted into the control algolithm described by the algorithmic language that computer can accept.Can simulate the mode of thinking of people due to control method to realize controlling, so need not controlled device have accurate mathematical model, in the control of just nonlinear system time complicated, relatively traditional control method has the biggest advantage.
The process of fuzzy control can be divided into:
(1) input signal variable obfuscation: input signal variate-value is converted into machine language；
(2) fuzzy reasoning: according to Fuzzy Logic Reasoning Algorithm, draw the fuzzy control quantity corresponding with input signal variate-value；
(3) fuzzy control quantity ambiguity solution: according to ambiguity solution algorithm, the fuzzy control quantity described in ambiguity solution, draw actual controlled quentity controlled variable.
Fuzzy control to be realized, first has to, to input parameter fuzzy, input variable value be converted into corresponding language and describes.The Fuzzy Logic Reasoning Algorithm provided according to rule base, obtains the process of controlled quentity controlled variable i.e. fuzzy reasoning corresponding with input variable value.The value that the output controlled quentity controlled variable that fuzzy reasoning obtains obtains through fuzzy reasoning, according to ambiguity solution algorithm, provides a controlled quentity controlled variable determined.PID controls to eliminate and have in control accuracy bigger advantage at static difference, but PID controls to require that control object is linear system (maybe can be reduced to linear time invariant system).Operationally, whole system is non-linear to respirator, and for different patients or the different times of same patient, systematical difference can be bigger, uses fuzzy control and PID to control the control method combined.For the immediate status of system, changed the coefficient of PID controller by fuzzy control, be allowed to be consistent with current system characteristic, preferably to be controlled effect.
Below as a example by one respiratory pressure fuzzy control type respirator of the present invention:
Common respirator pressure control range is 0-120cmH2O, usual range is 0-40 cmH2O。
Input signal variable obfuscation: according to pressure control properties of the present invention, the basic domain choosing pressure error e is
[-15cmH2O, 15cmH2O], quantifying domain is [-6,6], and word set is that { NB, NM, NS, ZO, PS, PM, PB}, membership function is gaussian-shape function.The basic domain of error rate Δ e is [-4cmH2O, 4cmH2O]
, quantifying domain is [-6,6], and word set is that { NB, NM, NS, ZO, PS, PM, PB}, membership function is gaussian-shape function.
Fuzzy reasoning: FUZZY ALGORITHMS FOR CONTROL is the core of fuzzy controller, according to control principle, obtains the rule of fuzzy control in conjunction with actual debugging result.
During Digital PID Controller work, t output controlled quentity controlled variable:
(1) u (t)=Kp*e (t)+Ki* Σ e (t)+Kd [e (t-1)-e (t-2)]
K moment controlled quentity controlled variable is than the increment of controlled quentity controlled variable: Δ u (k)=u (k)-u (k-1) during k-1, by formula:
(2) Δ u (k)=Kp* Δ e (k)+Ki*e (k)+Kd* [Δ e (k)-Δ e (k-1)]；
In formula, Δ e (k)=e (k)-e (k-1) does not temporarily consider the differential action, when deviation is bigger, it is desirable to take bigger Ki value, and Kp takes less value, can eliminate error rapidly；When controlled device is close to setting value, then requires to reduce Ki value, increase the value of Kp, integration can be avoided to bring overshoot.Owing to the regulation of Ki and Kp is in opposite direction, a variable factor can be only used to realize the regulation to Ki and Kp.
Analyze according to above, if regulatory factor is α (t), then the regulation relation of Ki and Kp:
(3) Ki (t)=Ki (0) * (1/ α (t))；
(4) Kp (t)=Kp (0) * (1+ α (t))/2；
In formula, α (t) is produced by fuzzy control, for regulation Ki and Kp in real time.Fuzzy control link produces fuzzy control quantity μ (t), and then controls to adjust factor-alpha (t):
(5) α (t)=α (t-1)+0.1 μ (t)；
Analyze the Rule adjusting of fuzzy control output μ (t), in conjunction with design experiences and experiment results, finally determine that fuzzy control rule table is as shown in table 1:
| e | NB | NM | NS | ZO | PS | PM | PB | |
| Δe | μ | |||||||
| NB | PB | PB | PS | ZO | NB | NB | NB | |
| NM | PB | PM | PS | ZO | NM | NM | NM | |
| NS | PB | PM | PS | ZO | NM | NM | NS | |
| ZO | ZO | ZO | ZO | ZO | ZO | ZO | ZO | |
| PS | NS | NS | NS | ZO | PS | PS | PB | |
| PM | NM | NM | NM | ZO | PS | PB | PB | |
| PB | NB | NB | NM | ZO | PM | PB | PB |
Table 1 fuzzy control rule
Fuzzy control quantity ambiguity solution: the control frequency of respirator is 25Hz, respiratory frequency 10-40 beat/min that common respirator provides, by estimation and experiment, when drawing the basic domain of μ (t) for [-2,2], disclosure satisfy that the system regulatory demand for Ki and Kp.It is [-6,6] that μ (t) quantifies domain, and word set is that { NB, NM, NS, ZO, PS, PM, PB}, membership function is triangular function.The anti fuzzy method of output, uses center of gravity calculation.For output, the calculating process of adjustment amount output, does quantification treatment by μ (t), output, with 0.5 as step-length, is quantified as {-2 ,-1.5 ,-1 ,-0.5,0,0.5,1,1.5,2} for convenience.By input determined above, export and control rule, in matrix labotstory (Matlab), fuzzy control process being emulated.By simulation calculation, obtain the inquiry of final fuzzy control quantity as shown in table 2:
| e | -6 | -5 | -4 | -3 | -2 | -1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | |
| Δe | μ | |||||||||||||
| -6 | 2 | 1.5 | 1.5 | 1 | 0.5 | 0.5 | 0 | -1 | -1.5 | -1.5 | -1.5 | -2 | -2 | |
| -5 | 1.5 | 1.5 | 1.5 | 1 | 0.5 | 0.5 | 0 | -1 | -1.5 | -1.5 | -1.5 | -1.5 | -2 | |
| -4 | 1.5 | 1.5 | 1.5 | 1 | 0.5 | 0.5 | 0 | -0.5 | -1 | -1.5 | -1.5 | -1 | -1.5 | |
| -3 | 1.5 | 1.5 | 1.5 | 1 | 0.5 | 0.5 | 0 | -0.5 | -1 | -1.5 | -1.5 | -1 | -1 | |
| -2 | 1.5 | 1 | 1 | 1 | 0.5 | 0.5 | 0 | -0.5 | -1 | -1 | -1 | -1 | -1 | |
| -1 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0 | -0.5 | -0.5 | -0.5 | -0.5 | -0.5 | -0.5 | |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 1 | -0.5 | -0.5 | -0.5 | -0.5 | -0.5 | -0.5 | 0 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | |
| 2 | -0.5 | -0.5 | -0.5 | -0.5 | -0.5 | -0.5 | 0 | 0.5 | 0.5 | 0.5 | 0.5 | 1 | 1.5 | |
| 3 | -1 | -1 | -1 | -1 | -0.5 | -0.5 | 0 | 0.5 | 0.5 | 1 | 1 | 1 | 1.5 | |
| 4 | -1.5 | -1.5 | -1.5 | -1 | -0.5 | -0.5 | 0 | 0.5 | 0.5 | 1 | 1.5 | 1.5 | 1.5 | |
| 5 | -1.5 | -1.5 | -1.5 | -1 | -1 | -0.5 | 0 | 0.5 | 1 | 1 | 1.5 | 1.5 | 2 | |
| 6 | -2 | -2 | -1.5 | -1.5 | -1 | -0.5 | 0 | 0.5 | 1 | 1.5 | 1.5 | 2 | 2 |
Table 2 fuzzy polling list
Respirator is set high pressure as 15 cmH2O, low pressure is 7cmH2O, uses threshold sensitivity method, determines the PID control coefrficient of inspiratory phase and expiratory phase: Kp, Ki, Kd, in this, as system pid parameter.Two kinds of control methods are evaluated in high pressure, middle pressure and the control effect of three pressure stages of low pressure in terms of stability, accuracy and control speed three.Control effect appraisement is shown in Table 3:
3 two kinds of control method index synopsis of table
Close to set amount time little integral coefficient, the most there is not over control when three pressure stage pressure switchings at pressure in fuzzy control.When reality is applied, air-breathing and expiration initial stage will not cause a sensation rushed to patient, add the comfort level of breathing.In Stress control error, fuzzy control controls higher than traditional PID in the accuracy of low pressure and high pressure section, although accurate not as traditional PID at intermediate pressure section, but error control the most more satisfactory (< 5%).Controlling on the used time, high pressure is when low pressure switches, and fuzzy control is owing to eliminating overshoot, and the time that controls used by fuzzy control controls less than traditional PID；When low pressure switches to high pressure, at high pressure section, owing to the integral coefficient of fuzzy control is decayed more, cause the control time longer, equal to or less than the used time of traditional PID control in middle pressure and low pressure stage.
The technical scheme provided the embodiment of the present invention above is described in detail, principle and the embodiment of the embodiment of the present invention are set forth by specific case used herein, and the explanation of above example is only applicable to help to understand the principle of the embodiment of the present invention；Simultaneously for one of ordinary skill in the art, according to the embodiment of the present invention, all will change in detailed description of the invention and range of application, in sum, this specification content should not be construed as limitation of the present invention.
Claims (2)
1. a respiratory pressure fuzzy control type respirator, it is characterised in that:
Including air-breathing loop, expiration loop, face shield；Described air-breathing loop, expiration loop are simultaneously connected with face shield；Also include the fuzzy controller of each component actuation in controlling air-breathing loop, expiration loop；
Described expiration loop includes expiration electromagnetic proportional valve, expiratory one-way valve；Described expiration electromagnetic proportional valve connects described face shield, and is also associated with first flow sensor, the first pressure transducer between；Described expiratory one-way valve connects expiration electromagnetic proportional valve；Described air-breathing loop includes sky oxygen mixer, suction control valve, air-breathing electromagnetic proportional valve, humidifier, gas receiver, oxygen input check valve, air input check valve, pressure regulator valve, precise pressure regulating valve, air relief valve；Described air-breathing electromagnetic proportional valve connects described face shield, and is also associated with second flow sensor, oxygen concentration sensor, the second pressure transducer between；Described humidifier is by precise pressure regulating valve series connection air-breathing electromagnetic proportional valve；Described gas receiver connects humidifier；Described empty oxygen mixer connects gas receiver；Described oxygen input check valve is connected by pressure regulator valve with empty oxygen mixer respectively with empty oxygen mixer, air input check valve, and parallel join has pressure balance electromagnetic valve between oxygen input check valve and air input check valve；Described suction control valve one end connects empty oxygen mixer by air relief valve, and the other end connects air-breathing electromagnetic proportional valve；Also include the hypoxia alarm connecting described oxygen input check valve.
2. according to a kind of respiratory pressure fuzzy control type respirator described in claim 1, it is characterised in that: also include the air horn connecting described air input check valve.
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| CN111888599B (en) * | 2018-12-10 | 2022-10-04 | 深圳市科曼医疗设备有限公司 | Pressure maintaining device of breathing machine |
| CN109569339B (en) * | 2018-12-12 | 2021-07-16 | 云南电网有限责任公司电力科学研究院 | Gas mixing system and method based on PID algorithm |
| CN109621118B (en) * | 2018-12-25 | 2024-04-19 | 湖南明康中锦医疗科技发展有限公司 | Self-adaptive adjusting method and device for respiratory support equipment |
| CN109646775A (en) * | 2018-12-29 | 2019-04-19 | 北京谊安医疗系统股份有限公司 | Parameter adjusting method, device and the medical breathing apparatus of medical breathing apparatus |
| CN111752156B (en) * | 2020-07-14 | 2021-10-29 | 北京航空航天大学 | Transnasal high-flow humidification oxygen therapy specialist treatment method and treatment system |
| CN112190800A (en) * | 2020-09-27 | 2021-01-08 | 湖南明康中锦医疗科技发展有限公司 | Pressure control system and method of respiratory support equipment |
| CN112915332A (en) * | 2021-03-01 | 2021-06-08 | 北京航空航天大学 | Multi-channel respirator based on pneumatic system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0560490A1 (en) * | 1992-02-12 | 1993-09-15 | Puritan-Bennett Corporation | System and method for controlling a periodically actuated ventilation flow system |
| EP2361650A1 (en) * | 2010-02-26 | 2011-08-31 | Nihon Kohden Corporation | Artificial ventilation apparatus |
| CN202263271U (en) * | 2011-09-30 | 2012-06-06 | 南京普澳医疗设备有限公司 | Respiratory pressure fuzzy control type respirator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201329110Y (en) * | 2008-12-23 | 2009-10-21 | 杨素红 | Plateau auxiliary respirator |
-
2011
- 2011-09-30 CN CN201110294524.2A patent/CN103028170B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0560490A1 (en) * | 1992-02-12 | 1993-09-15 | Puritan-Bennett Corporation | System and method for controlling a periodically actuated ventilation flow system |
| EP2361650A1 (en) * | 2010-02-26 | 2011-08-31 | Nihon Kohden Corporation | Artificial ventilation apparatus |
| CN202263271U (en) * | 2011-09-30 | 2012-06-06 | 南京普澳医疗设备有限公司 | Respiratory pressure fuzzy control type respirator |
Non-Patent Citations (2)
| Title |
|---|
| 正压呼吸机模糊PID控制研究;范久臣等;《机械制造》;20080420(第04期);全文 * |
| 睡眠呼吸机的模糊PID控制系统研究;苏东风;《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅱ辑》;20061015(第10期);第8-27页 * |
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